A study conducted among low-income families in three states suggests that the emotional health and academic skills of preschoolers and young adolescents don't suffer when their mothers move off welfare and into the workforce.

Throughout most of the 1990s, the number of doctoral degrees that U.S. universities awarded in science and engineering climbed steadily, to 27,300 in 1998, but by 2001, the number had dropped to 25,500, the lowest number since 1993.